Ensuring seamless and secure communication between your Trezor and computer
Trezor Bridge is a small, essential software application that acts as a secure communication link between your Trezor hardware wallet (Trezor One or Trezor Model T) and your web browser. It allows the Trezor Suite web and desktop applications to interact with your device seamlessly and securely.
Think of it as a dedicated translator and security guard that ensures only authorized software can talk to your hardware wallet.
Your web browser (like Chrome, Firefox, or Brave) is designed with strict security policies that prevent websites from directly accessing USB devices. This is a good thing, as it protects you from malicious websites trying to interact with your hardware.
However, this also means that when you go to the Trezor Suite web app (suite.trezor.io), your browser blocks it from communicating with your Trezor device. Trezor Bridge solves this problem by:
http://127.0.0.1:21325/) instead of trying to talk to the USB port directly, which the browser would forbid.This creates a secure and permitted pathway for data to flow between the web app and your hardware wallet.
It's important to understand how these components work together:
| Component | Description | Requires Bridge? |
|---|---|---|
| Trezor Suite (Web) | The browser-based interface for managing your crypto. | Yes |
| Trezor Suite (Desktop) | The standalone application you download and install on your computer (Windows, macOS, Linux). | No (Bridge is built-in) |
| Trezor Bridge | The dedicated communication tool required for the Web version of Suite. | N/A |
Recommendation: For the best and most secure experience, most users should download and use the Trezor Suite Desktop application. It is more feature-rich, doesn't rely on a browser, and includes Bridge automatically.
Uses a local connection (localhost), ensuring your private keys and seed phrase never leave your Trezor device.
The Bridge service updates itself automatically when a new version is available.
Runs quietly in the background with minimal resource usage.
Available for Windows, macOS, and Linux.
Plug your Trezor device into your computer's USB port.
Go to suite.trezor.io in your browser.
The website will automatically detect that Bridge is not installed and provide a prompt to download it.
Click the download link, run the installer, and follow the simple on-screen instructions.
After installation, completely close and reopen your web browser.
Go back to suite.trezor.io, refresh the page, and it should now recognize your connected device.
Note: On Linux systems, you may need to grant additional permissions for the Bridge to access USB devices. The Trezor Wiki provides detailed instructions for this.
If you're having connection problems: